They serve a fixed, twocourse lunch for £27.50. But there is a 12.5 per cent "discretionary gratuity" and, if you are eating on an expense account, there are plenty of opportunities to spend much more than that. The cheapest wine comes at £3.90 a glass, the dearest, £280 a bottle. There was a very helpful sommelier who, though he looked scarcely older than some of the wines on his list, knew his stuff. He even suggested a relatively inexpensive Argentinian Sauvignon Blanc, Bodega Norton, before taking us on to a rather more powerful St Emilion, 1997 Chateau de Sarpe.